diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index ecc1bed7..de8600f2 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1141,6 +1141,18 @@ LLVM:
   extensions:
   - .ll
 
+LSL:
+  type: programming
+  lexer: LSL
+  aliases:
+  - lsl
+  ace_mode: lsl
+  extensions:
+  - .lsl
+  interpreters:
+  - lsl
+  color: '#3d9970'
+
 Lasso:
   type: programming
   lexer: Lasso